<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script src="../js/vue.js"></script>
    <div class="box">
        <h1>{{name}}</h1>
        <p>{{msg}}</p>
    </div>

    <script>
        let all = new Vue({
            el: '.box',
            data: {
                name: '于明杨',
                msg: 'yumingyang',

            }
        })
        console.log(all);
        all.name = '啊！'
        console.log(all);

    </script>
</body>

</html>